Ok nice one, I might get it somewhere near off the machine so it doesn't shake itself to bits, then mount it up again and start adjusting the tuning again.

Thanks for the info on the tuning Muzzer and m_c, I watched a few videos on the process earlier as well and I now at least have a better understanding of what each value does to the tuning and how they relate to each other.

I think the screenshot I previously attached of the settings is the only values you can change for the drives. There may be some other settings in UCCNC control software but I haven't delved into that too far yet.